It seems like some registry or browser malfunctioning because last time I faced the same problem in windows XP and had to re-install windows after trying each and everything. However you can do following tries:

Run ATF-Cleaner and CCcleaner, free sharewares available on internet for download, in your system for broken registry links , clearing cache and temporary internet files etc.

If not the you can also try by performing system restore that might can help otherwise in worse case you can re-install your OS to make it trouble free. Good Luck